| 综合管廊燃气舱结构形式对燃气爆炸超压的影响 |
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| 引用本文： | 夏微,高魁,乔国栋,田宇,周云权. 综合管廊燃气舱结构形式对燃气爆炸超压的影响[J]. 中国安全生产科学技术, 2021, 17(6): 19-23. DOI: 10.11731/j.issn.1673-193x.2021.06.003 |
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| 作者姓名： | 夏微 高魁 乔国栋 田宇 周云权 |
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| 作者单位： | (1.安徽理工大学 安全科学与工程学院，安徽 淮南 232001；2.安徽理工大学 煤矿安全高效开采省部共建教育部重点实验室，安徽 淮南 232001) |
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| 基金项目： | * 基金项目: 国家自然科学基金项目（51604010，52074013）；安徽省教育厅高校自然科学基金项目(KJ2020A0327)；安徽理工大学2020年研究生创新基金项目（2020CX2014） |
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| 摘 要： | 为研究地下综合管廊燃气舱结构形式对燃气爆炸超压的影响,采用数值模拟的方法,改变燃气舱高度,通风分区长度和局部开口大小,分析不同情况下的燃气爆炸超压变化规律.结果表明:冲击波传播速度随燃气舱高度的增加而减小,随着高度的增加,超压峰值曲线由"驼峰状"逐渐变为两端高中间低的"盆形",爆炸过程产生的最大超压与高度成反比关系.超...
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| 关 键 词： | 燃气舱 燃气爆炸 超压 冲击波 |
Influence of structural form of gas compartment in utility tunnel on explosion overpressure of gas |
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| XIA Wei,GAO Kui,QIAO Guodong,TIAN Yu,ZHOU Yunquan. Influence of structural form of gas compartment in utility tunnel on explosion overpressure of gas[J]. Journal of Safety Science and Technology, 2021, 17(6): 19-23. DOI: 10.11731/j.issn.1673-193x.2021.06.003 |
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| Authors: | XIA Wei GAO Kui QIAO Guodong TIAN Yu ZHOU Yunquan |
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| Affiliation: | (1.School of Safety Science and Engineering,Anhui University of Science and Technology,Huainan Anhui 232001,China;2.Key Laboratory of Safe and Effective Coal Mining (Anhui University of Science and Technology),Ministry of Education,Huainan Anhui 232001,China) |
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| Abstract: | In order to study the influence of the structure form of gas compartment in the underground utility tunnel on the overpressure of gas explosion,the numerical simulation method was adopted to analyze the change laws of gas explosion overpressure under different conditions by changing the height of gas compartment,the length of ventilation section and the size of local openings.The results showed that the propagation velocity of the shock wave decreased with the increase of the height of gas compartment.With the increase of the height,the peak overpressure curve changed gradually from “hump-shaped” to “basin-shaped”,which was high at both ends and low in the middle.The maximum overpressure generated in the explosion process was inversely proportional to the height.When the peak overpressure was close to 0 kPa at 340 m,the extension of ventilation zones would not increase the peak overpressure,therefore,the length of ventilation zones could be appropriately extended according to the actual situation under the requirements of fire prevention.The existence of local openings enabled the explosion gas flow to release pressure freely,and the peak overpressure was inversely proportional to the size of the openings. |
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| Keywords: | gas compartment gas explosion overpressure shock wave |
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